Withdraw from card

You can withdraw funds from a card back to the customer's account using the Withdraw from card endpoint:

curl --request POST \
     --url https://api.gravv.xyz/v1/cards/withdraw \
     --header 'Api-Key: <Api Key>' \
     --header 'Idempotency-Key: 979879887678789_attempt_1' \
     --header 'content-type: application/json' \
     --data '
{
  "customer_id": "9e3cccad-e9ae-47a0-81ee-063af0159310",
  "amount": 1.0
}
'

You will receive a response with the blockchain transaction hash:

{
  "data": {
    "tx_hash": "0x2e5d0af9189b4b4c23bc64b96295e730609ec91e50e452a5da0a4af4bfe5c192"
  },
  "error": null
}